Hajoon announced his friendship with Red Velvet´s Seulgi

On August 25, Hajoon shared several photos on Instagram of himself posing with Seulgi backstage at “Inkigayo.” The two idols exchanged their respective groups’ latest albums and proudly showed them off as they posed for the camera.

In the caption, he wrote, “It’s been a long time! It seems like it was only yesterday when we played games on an iPad during high school, but it’s so great to see you like this. Fighting.”